Description

EFI Wiring Harness – Terminated Main Harness – Ford Modular 1999-2004 – Kit

Why Choose Us?



Frequently Asked Questions​

As an Authorized Automotive Retailer in the United States, we take pride in guaranteeing 100% authentic products from all brands available on our website. With partnerships spanning 1,000+ brands and a network of 20+ distributor warehouses nationwide, we maintain millions of auto parts in inventory across the USA, ensuring quick shipping and reliable service to our customers. When you shop with us, you're investing in quality and trust.
We believe we have the fastest backorder system in the U.S. auto parts industry, thanks to our strong partnerships with brands and vendors. Nearly all backordered auto parts are shipped directly by the vendors without any additional delays, or they are placed as special orders on the same day. In most cases, backordered parts are delivered within 5-10 days.
We offer unbeatable prices and the best shipping rates on auto parts, with exclusive protection and insurance included to safeguard your order from damage or loss. Enjoy convenient door-to-door delivery, real-time tracking, and our 100% satisfaction guarantee for a smooth, worry-free experience.
Our standard shipping typically takes 1-3 business days. We will provide estimated shipping time for each product. While we aim to deliver as quickly as possible, this timeframe ensures all orders are processed, prepared, and dispatched with care. If the products are not ready for shipping in 72 hours, we will refund you 100%
Absolutely. Once your order is dispatched, you’ll receive an email with tracking details, so you can follow your shipment every step of the way. Every step of shipping process will be sent through email notifications or using tracking page.
Every product page includes a stock level indicator to show what’s available. We always update the inventory 24/24. We’ll be happy to check availability and provide updates on new stock arrivals if you need a help.
We’re sorry to hear that your order wasn’t delivered in perfect condition. Please email us with your order number, a description of the issue, and photographs of the damaged item. Once we receive this information, we’ll arrange for a replacement or refund and handle the return process.
You can return items within 30 days of receipt. Ensure the product is new in its original packaging and securely wrapped for safe transit. Once we receive the item in sellable condition, we’ll issue a full refund for the product value. Contact us for the return address and further instructions.

Global Shipping Estimates (Ships from USA)

Destination Region Est. Delivery Time Estimated Cost
🇨🇦 Canada 5 - 7 Days
DHL UPS USPS FedEx
From $50.00 USD
🇪🇺 European Countries 5 - 7 Days
DHL UPS USPS FedEx
From $70.00 USD
🇦🇺 Australia 5 - 7 Days
DHL UPS USPS FedEx
From $110.00 USD
🇦🇪 United Arab Emirates 5 - 7 Days
DHL UPS USPS FedEx
From $100.00 USD
🇸🇦 Saudi Arabia 5 - 7 Days
DHL UPS USPS FedEx
From $100.00 USD
🇯🇵 Asia Countries 5 - 7 Days
DHL UPS USPS FedEx
From $130.00 USD
*Note: These are estimated costs for a standard package. Exact shipping fees will be calculated at checkout using live rates based on your specific location and cart weight.

About HOLLEY

A leader in fuel systems for over 100 years, Holley fuel management systems have powered top circle track and drag racing teams around the world. Now, Holley offers EFI systems for GM's LS engine, among many other applications. Holley's products also include performance fuel pumps, intake manifolds, and engine accessories products for street performance, race, and marine applications.

Reviews

There are no reviews yet.

Be the first to review “HOLLEY Main Harness 99-04 Ford Modular Engine 558-108”

Your email address will not be published. Required fields are marked *

Recently viewed products

  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    BERT TRANSMISSIONS Stud Band Anchor SG-1033

    SKU: BERSG-1033
    Product information
    Details...
    Original price was: $16.26.Current price is: $14.78.Add to cart
    Original price was: $16.26.Current price is: $14.78.
    Quantity Only 4 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Placeholder
    Add to wishlist

    PYROTECT Helmet Pro Air Vortex Medium Flat Black SA2020 HB942320

    SKU: PYRHB942320
    Product information
    • Weight6.2 lbs
    • Dimensions15 × 13 × 13 in
    • Product Line

      Pro Air Flow Vortex

    • Helmet Size

      Medium

    • Circumfrence Low Range (In)

      22-1/2 in

    • Circumfrence High Range (In)

      22-7/8 in

    • Circumfrence Low Range (Metric)

      57 cm

    Details...
    Original price was: $568.54.Current price is: $516.85.Add to cart
    Original price was: $568.54.Current price is: $516.85.
    Quantity Only 1 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    MILODON Vacuum Cap Kit 41150

    SKU: MIL41150
    Product information
    • Weight0.11 lbs
    • Dimensions9.7 × 5.85 × 0.55 in
    • Material

      Rubber

    • Finish

      Natural

    • Quantity

      Kit

    • Vacuum Cap 1 Inside Diameter

      1/8 in

    • Vacuum Cap 1 Color

      Black

    Details...
    Original price was: $11.44.Current price is: $9.95.Add to cart
    Original price was: $11.44.Current price is: $9.95.
    Quantity Only 8 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    MANLEY BBC E/D 2.400 Intake Valves 11582-8

    SKU: MAN11582-8
    Product information
    • Weight3.6 lbs
    • Dimensions14.5 × 8.2 × 3.5 in
    • Product Line

      Severe Duty

    • Type

      Intake

    • Valve Head Diameter (In)

      2.400 in

    • Valve Length (In)

      6.600 in

    • Valve Stem Diameter (In)

      0.3415 in

    Details...
    Original price was: $343.00.Current price is: $311.48.Add to cart
    Original price was: $343.00.Current price is: $311.48.Add to wishlist
  • Add to wishlist
    Sale
    Placeholder
    Add to wishlist

    JERICO 25 Tooth 3rd gear JER-3M2523

    SKU: JER3M2523
    Product information
    • Weight2.153 lbs
    • Dimensions3.5 × 3.5 × 1.5 in
    • Material

      Steel

    • Color

      Natural

    • Finish

      Natural

    • Quantity

      Each

    • Intended Purpose

      3rd Gear

    Details...
    Original price was: $202.09.Current price is: $183.72.Add to cart
    Original price was: $202.09.Current price is: $183.72.
    Quantity Only 1 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    TRANS-DAPT Oldsmobile Water Neck 9403

    SKU: TRA9403
    Product information
    • Weight1.21 lbs
    • Dimensions5 × 4.75 × 3.25 in
    • Material

      Steel

    • Color

      Chrome

    • Finish

      Plated

    • Quantity

      Each

    • Hardware Included

      Yes

    Details...
    Original price was: $31.68.Current price is: $28.80.Add to cart
    Original price was: $31.68.Current price is: $28.80.
    Quantity Only 2 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    ULTRA SHIELD Harness 5pt Black Indiv Shoulder Pull-Down HB22031

    SKU: ULTHB22031
    Product information
    • Weight6.69 lbs
    • Dimensions11.95 × 5.8 × 5 in
    • Sfi Rating

      16.1

    • Number Of Points

      5 Point

    • Shoulder Style

      Individual

    • Lap Belt Ends

      Bolt In, Wrap Around

    • Lap Belt Mount

      Floor, Roll Bar

    Details...
    Original price was: $159.03.Current price is: $144.57.Add to cart
    Original price was: $159.03.Current price is: $144.57.
    Quantity Only 2 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    WEATHERTECH TechCare Floorliner C leaner and Protector kit 8LTC36K

    SKU: WEA8LTC36K
    Product information
    • Weight3.2 lbs
    • Dimensions9.1 × 7.3 × 4.5 in
    • Quantity

      Kit

    • Product Line

      TechCare

    • Intended Purpose

      Floor Mat Cleaner / Protectant

    • Cleaner Included

      Yes

    • Cleaner Container

      Spray Bottle

    Details...
    Original price was: $38.00.Current price is: $33.99.Add to cart
    Original price was: $38.00.Current price is: $33.99.Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    WINTERS Pinion Roller Bearing 7331

    SKU: WIN7331
    Product information
    • Weight0.34 lbs
    • Dimensions3.65 × 2.8 × 0.9 in
    • Hub Location

      Pinion Nose

    • Bearing A Style

      Roller

    • Bearing A Race Outside Diameter

      2.050 in

    • Bearing A Race Included

      Yes

    • Bearing A Thickness

      0.595 in

    Details...
    Original price was: $43.53.Current price is: $39.57.Add to cart
    Original price was: $43.53.Current price is: $39.57.
    Quantity Only 3 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    FRAGOLA #4 Bulkhead Tee Fitting Black 483404-BL
    Add to wishlist

    FRAGOLA #4 Bulkhead Tee Fitting Black 483404-BL

    SKU: FRG483404-BL
    Product information
    • Weight0.04 lbs
    • Dimensions4.25 × 1.9 × 0.8 in
    • Style

      Tee

    • Fitting A Size End 1

      4 AN

    • Fitting A Thread Type End 1

      Male

    • Fitting A Size End 2

      4 AN

    • Fitting A Thread Type End 2

      Male

    Details...
    Original price was: $14.77.Current price is: $13.43.Add to cart
    Original price was: $14.77.Current price is: $13.43.Add to wishlist

    90